Home / 2,630.08-3,938.56-2,011.20

Finding the Fourth Proportional to 2,630.08, 3,938.56 and 2,011.20

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Solution

The fourth proportional to 2,630.08, 3,938.56 and 2,011.20 is: 3,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.08 : 3,938.56 = 2,011.20 : x
  2. Step 2: Convert to fraction form
    2,630.08/3,938.56 = 2,011.20/x
  3. Step 3: Cross multiply
    2,630.08x = 3,938.56 × 2,011.20
  4. Step 4: Simplify right side
    2,630.08x = 7,921,231.87
  5. Step 5: Solve for x
    x = 7,921,231.87/2,630.08
  6. Step 6: Final answer
    x = 3,011.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.